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How does the light gun for a video game work?

electronics.howstuffworks.com/question273.htm

How does a video-game light gun work? How does the game know where the gun is aiming?

How is my radio able to display the stations call letters?

electronics.howstuffworks.com/question323.htm

If you have a car radio that shows FM station call signs on the display panel, then you have the Radio Data System feature. Find out how they work!

What Does the CE Certification Logo Mean?

electronics.howstuffworks.com/everyday-tech/question135.htm

Have you ever noticed the CE certification logo stamped on consumer products and electronics? Find out what this logo says about the product you're buying.

What Is the Difference Between Two- and Three-pronged Plugs?

electronics.howstuffworks.com/everyday-tech/question110.htm

Some appliances use three prongs to connect to an outlet, while others only use two. Learn the difference between two- and three-pronged plugs.

What causes that howling sound in PA systems?

electronics.howstuffworks.com/gadgets/audio-music/question263.htm

What causes that howling sound in PA systems? Everyone calls it feedback -- what's "feedback"? Learn more information about PA systems in this article.

What do the UL marks on so many products mean?

electronics.howstuffworks.com/everyday-tech/question218.htm

A large number of electronic devices carry "UL" marks. You can find them on everything from Christmas lights to digital camcorders. What does this logo mean?

What do the yellow and black wires in a home telephone jack do?

electronics.howstuffworks.com/question176.htm

With all the different colored wires used in communications, what do the yellow and black wires in a home telephone jack do?

What does 900 MHz mean in a cordless phone?

electronics.howstuffworks.com/question320.htm

I've been looking at cordless phones and have noticed that this area has gotten fairly complicated! For example, what is the difference between 900 MHz and other systems?

What does a V-chip do and how does it work?

electronics.howstuffworks.com/question167.htm

Do you know what the v-chip does in your TV? Learn how a v-chip detects TV ratings and gives parents the ability to control viewing of violent content.

What happens if I touch the surface of a CD?

electronics.howstuffworks.com/question23.htm

Is it true that you have to be very careful handling CDs and never allow your hands to touch anything but the edges?

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